This product is exactly as described. It has a lot of force, but moves slowly (which the specs state). The potentiometer is accurate and makes building a PID controller much easier.

(Posted on 5/22/15)

Good price / quality

Review by Luben

Probably the smallest linear servo you can get on the market. Opens horizons for new miniature applications. The torque is not great - should not exceed 140-160 g load. All gears inside are plastic so consider not to use it in heavy duty applications. Because of the backlash of the central nut and the printed resistive tracks of the potentiometer (directly on control PCB) it can't be used for very precise positioning but is excellent for discrete states (like open or close a vent, etc.).

The pure move is not 20mm as stated but 17mm, it takes 1s to move from one end to the other on 3.6V. Because of the plastic gears and the coreless motor the noise when moving is low.

I would recommend you get some samples to play with, for sure you'll get new ideas where to use it.

(Posted on 2/5/15)

Amazing

Review by Jared

This servo easily receives 5 stars. It is small powerful
and built strong. Great product!!

(Posted on 12/17/14)

Works alright

Review by John Paul

One thing I should note is that the stroke length is 1-7/8" not 2. So prepare your mechanisms accordingly. I've used these often and this is common to every one..

(Posted on 10/13/14)

Great product!

Review by Nick

This seems like a quality product so far, and the price is incredible, considering how big it is. It's smooth and strong. The motor shuts off when it gets to either end, which helps prevent motor burn out, which is a nice feature.

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... sensors to something as complex as muscle sensor input. As for the actuators themselves, it all comes down to how much additional force you want, and in what size. A normal (standard) R/C cannot provide anywhere close to the force of a normal hand / finger ...

... and 3 inches of travel in order to steer. I'm planning on using a standard 2.4 R/C two or three channel radio with 1/4 scale servos for the ... control the linear actuator? I want it to act like a servo. All of the actuators I see use a simple motor with limit switches w/no feedback capabilities. ...

... per second and provide at least 20 lbs of force? Again, very few actuators have a stroke of 1" (it's simply too short). Consider: http://www.robotshop.com/en/2-stroke-firgelli-automation-12vdc--35lb-force-linear-actuators-with-limit-switch.html ... (might be a bit too close to 20 lbs) The controller would be standard ...

... a higher rpm than with just one motor. You should not power motors or actuators directly from the Arduino's pins! Can you draw the setup you have ... central control unit, but it's a bit harder to connect the Arduino to a standard R/C unit.

... and Arduino microcontroller A servo motor, such as the Hitec HS-322HD Standard Heavy Duty Servo, would give you control of the door open/closed ... with built-in limit switches You can use one of the following linear actuators, as long as you can mount it in a way that the door-closed position ...

... make code to demonstrate it if you are interested. With the rotating actuators, it's a little bit more complicated than a standard Stewart platform, but I scribbled some stuff on a piece of paper and I think I have ...

... a new version of its graphical system design software that provides a standard development platform for designing robotic and autonomous control ... robotics library with connectivity to standard robotic sensors and actuators, foundational algorithms for intelligent operations and perception ...

... out http://www.firgelli.com. They have a CIB control board that accepts standard servo control signals. 12 or 6V are ok. If you want it to work with the big firgelliauto actuators you just need a 12V supply for the actuator. As long as the grounds are tied ...

... in projects. I'd like to drive these chips using the board out of a standard servo. One thing I'm not familiar with in his chip is the "fast ... I've noticed that the stall current of the standard frigelli linear actuators is ~4A, so this chip might make a decent driver for these when ...

... the robot with the PC acting as the brain and also for storing the standard paths that I intend to use. Is this really possible and has any ... that understanding, below are some links to look at for using linear actuators. I'd start by making a full size mockup of your desired arm using ...